Art of refining oils



Patented Apr.1 6, 1926.

UNITED s'rlvras.K

*PATENT OFFICE.

RUSSELL WILES, on RIVERSIDE, ILLINoIs, AsSIeNoR ro STANDARD oIL COMPANY, or

' WHITING, INDIANA, A coRronArIoN'or INDIANA.

.ART OF REFINING OILS.

Application ined July v11, 1921. seriai- No. 483,861.

' To all whom/,t may concern:

`Be it known that I, RUSSELL WILEs, a citizen of the United States, residing at Riverside, in the county of Cook and State of Illinois, have invented a new and useful Imwhich the following is a specification.

The present invention relatesto improvements in the refininor of hydrocarbon'oils, and more articulary to the recovery of volatile hy rocarbons, such as lighter gasoline fractions, from refining and natural gases.

In accordance with the present invention the hydrocarbon gases to be treated for the recovery of gasoline constituents are subjeoted to the absorbent action of reduced crude oil,by which term is designated the lresidue resulting after distillation from crude oil of its kerosene and lighter constituents by steam or by steam and lire. 'A suitable reduced crude is, for example, a bottom obtained by distilling oft- 15 to 25% from a mid-continent crude withlire and steam. This may suitably be effected in a counter-currentabsorber of customary type, the absorber being held under the same pressure as the gases being treated or higher. The gas freed from its gasoline constituents passes intoa dry -gas line which leads it to a suitable reservoir.

' The reduced crude oil leaving the absorbers carries with it the absorbed gasoline constituents of the gas. These, .in general, are not yproperly proportioned for a motorfuel gasoline, the proportion of higher boiling point fractions of high fuel value being low. This reduced crude oil is next admixed with normal crude oil containing its natural kerosene and lighter fractions. The proportion of the reduced crude absorberliquid may 'line constituents absorbed in the reduced crude are driven ofi' `at the Sametime as the natural gasoline constituents of the crude oil, and are blended with the excess of less volatileI gasoline constituents of the normal crude oil to form a properly balanced motor `fuel product. The gasoline cons tituentshof distillation may' the crude-eil V@ 1-us utilized are those which ordinarily find their way into the intermediate product generally known as naphtha bottoms. The gas passed thru the absorber .maysuitablybe, when convenient, the un provement in the Art of Refining Oils, of4

. above described distillation is carried out.

condensed gas from the stills in which the The accompanying drawing illustrates in chart form the flow of the process.

Although the present invention has been described -in connection with the details of a specific embodiment thereof, it is not intended that these details shall be regarded as limitation's'upon the scope of the invention, except in so far as included in the accompanying claims.

production of gasoline which comprises sub,-`

jecting hydrocarbon gases containing gasoline constituents to the absorbent action' of .reduced crude o il, admixing the reduced crude'oil with crude oil containing gasoline and heavier constituents and distilling the mixture'by the conjoint application of heat and an inert gas.

3, The process of refining oils for the production of gasoline which comprises subjecting hydrocarbon gases containing gasolinel constituents to the absorbent' action of 4reduced crude oil, admixing the reduced crude 4oil with crude oil contaming gasoline and heavier constituents and fractionally distill- -ing the mixture, and subjecting the gases evolved and uncondensed during, such distillation to the absorption Step of the cycle.

4. The process of refining oils for the production of. gasoline which comprises Subjecting hydrocarbon gases containing gasoline constituents to the absorbent action of reduced crude oil, admixing the reduced crude oil with crude oil containing gasoline and heavier constituents, the said reduced crude forming 20 to 50% ofthe mixture, and fractionally distilling the mixture.

RUSSELL Wngns) 

